Forging-machine.



M. K. HENCH;

FORGING MACHINE.

APPLICATION FILED MAR. 3!, I917.

INVENTOR Patented Jan. 7,1919.

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A TI'ORNE Y Patented J an. 7, 1919.

M. K. HENCH.

FORGING MACHINE.

APPLICATION H'LED MAR.3I. I917. 1,290,741

WITNESS v M. K. HENCH.

FORGING MACHINE.

APPLICATIU'N FILED MAILSI, I917.

1 296 741 Patented Jan. 7, 1919.

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M. K. HENCH.

FORGING MACHINE.

APPLICATION FILED MAR. 3|. 19H.

1390,7421. Patented Jan. 7,1919.

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MARTIN K. HENCH, OF CAMDEN, NEW JERSEY.

FORGING-MACHINE.

Specification of Letters Patent.

Application filed March 31, 1917. Serial No. 158,796.

Toall whom it'may concern:

.Be itknown that I, MAR'rrN Hinton,

a-citizen of the United States of America,

and resident of the cityand' county of Camden, State of New Jersey, have. invented a certain new and useful Improvement in Forging-Machines, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

The general object of my present invention is to provide an improved forging mechanism especially adapted for use in forging angle-pieces out of structural bars, andv particularly out of ordinary angle bars.

The various features of novelty. which characterize my invention are pointed out with. particularity in the claims annexed. to and forming part of this specification. For .a. better understanding of the invention, however, and of, the advantages. possessed by it and. specific objects attained by its use, reference should be had to the accompanying drawings and descriptive matter in which I have illustrated and described preferred embodiments of my invention.

Of the drawings:

Figure 1 is a side elevation of my improved angle bending machine with an up- .perportion of. the same broken away;

Fig. 2 isra plan view of themachine shown in Fig. 1- with an upper portion of the same removed; I Fig. 3 is an elevation at right angles to Fig. 1;.

Fig. 4 is a side elevation of a portion of the apparatus taken on a larger scale than Figs. 1 to 3, showing a part of the external die and a work holder connected thereto, and showing in section a piece of work held thereby;

Fig. 5 is a sectional view line 5-5 of Fig. 4;.

Fig. 6. is a plan view of the active forgtaken on the ing elements in" an initial stage of angle I cut away as indicated at l) to provide a. .clearance space for a work holder element D pivotally secured in bending operation; Fig. 7' is a view i'a- Fig. 8'is a view taken similar to Fig. 6 showing the condition of the apparatus at the' conclusion of the angle bendin" operation;

Fig. 9 is a view taken at right angles to taken at right angles to lug. 10 is a view taken similarly toFig.

6 illustrating the use ot'formers of diflferent shape from tho m h in F g t 1 I lIlClllSlVe and v .Fig. 11 is a View taken similar to Fig.

illustrating: a further modification. ,I

My: improved forgin achine, in ,the form illustrated in the V a "massive base AT,.provided with a horizontal bed A ,;grooved to. adjustably'receive .a -diesupporting abutment B. As. shown the abutment B carriesor supports an in- Patented Jan. '7,- 1919;.

ra'wings, comprises V ternal angle. forming die B. having-a .re-

movable tip portion B? dovetailed intothe body of the die. Cooperating with the stationary die .or. former is, a horizontally movable. die ,or former made. in-v three sections-D, C and..]) .",which are shaped to cooperatewith the. die;.Bf in forging angles. The middlesection- C is formed. with aynotch at itsfrontend conforming in shape to the adjacent portion ofthe wedge-shapedv internal formerv B. Thesside sections D and D. haveinclined iacesd which, in the con- .dition of theapparatus shown in'Fig. 8,

form extensions-of the adjacent Walls 0 of .the notch of thediesection C. Each of the external diesections C, D and D .is provided with an individual advancing plunger (Y, D and D. respectively, working in cylinder spaces-(12 D and D respectively, (see Fig. 2). The admission to, and exhaust from the cylinders C of the working fluid. is controlled by hand operated valves (1 13 and D respectively.

Small plungersr C D and D working in cylinders provided for the purpose in the framework A and connected at all times to.

a-source of fluid under pressure, serve toretract the former sections-(3D and D when the exhaust of the pressure fluid from the cylinders C D? and D permits this. .As

D and D shown, a transverse bar C D is recessed in p and bolted to the die sectionsD, C and D and thus detachably but rigidly unites these die sections into. a single die element.

Each of the side vformerswD. and D is the recess D by. a corresponding bolt D. Each of the work and a vertical pin portion-which .is spaced away from the-front wall of the corresponding side former far" enough to receive the vertical flange Xi of an angle bar X having its Ma ma flees-e r ing i n t er i.

ends of the pin portion of the work holders D Each work holder D is so pivoted with respect to the former angle d at the junction of the inclined face d of the former with the transverse end face d, that as the angle forming operation proceeds the work hold- E which is supported by the machine superstructure which comprises' a main upright portion A and posts A. Advantageously, this superstructure may support air compressing means for supplying the compressed air needed for the operation of the'hammer E. Inasmuch as the character of the means for supplying the working fluid to the cylinder E forms no part of my present inven tion I havenot thought it'necessary to illustrate this means herein.- The admission of the working fluid to, audits exhaust from the cylinder E is controlled by a valve E In the operation of forging an anglepiece out of an angle bar, the latter is first placed upon the two work supports D with the formers B, C, D and D occupying the positions shown in Fig. 2. The formers C, D and D and'th'e hammer E, are then manipulated to bring the bar into the finishedshape shown in Figs. 8 and 9.

In a preferred mode of operation with the die parts C, D and D rigidly secured together by the bar 0 D, these connected die parts are first advanced to slowly bend the bar into approximately the shape desired. Figs. 6 and 7 illustrate the position of the parts and the condition of bar I X during an intermediate stage of the bending operation. During this bending operation the hammer E is manipulated to beat out the bu kle .X formed inthe upper flange of the bending operation and after the bar is b nt into approximate shape the die parts C, D and D are manipulated to subject the blank to a series of hammer blows which are interspersed with hammer blows imparted to the top flange of the bar by the. hammer E. By proceeding in the mannerdes ribed material is provided at the apex of the angle to insure. a proper contour and proper str ngth at the apex of the angle when the latter is finished.

The apparatus illustrated and described forms a simple and effective mechanism for accomplishing the desired result. With its 'usfelitis possible-t0 make angle pieces out .tcrs Patent, is

of straight bars of angle bar cross sections with the apices of the angles formed sharply and uniformly defined and of roper strength, without requiring any cuttlng of the blanks and without requiring highly skilled opcratives. It will of course be understood that the shapes of the angles formed may be readily varied byreplacing one set of dies or formers byanother; for instance, the apparatus shown maybe rea'dily changed to make angles rounded attheir apices by simply replacing the former parts B and O of Figs. 1 to 9 by the parts B and 0 respectively of Fig. 10. In Fig. 11 I have illustrated another form of forgingoperation which may be carried out with the apparatus shown in Figs. 1 to 5 inclusive, when modified by the simple, replacement of the die parts B, C, D and D, by die parts B C D and D respectively, and those skilled in the art will "un derstand'that many dilferent'special forging operations maybe carried out with the mechanism disclosed by the aid of the, die 2 parts already referred to, or other more 90 suitably shaped die parts. While, as I have already stated, I prefer to rigidly secure the movable die parts together for use in carrying out a simple angle forging operation, it is by no means essential that these parts should be secured together for this operation, and the capacity for individual operation of the different movable die parts 7 made possible, bv the omission or removal of the part CD, as shown in Fig. 11, is a desirable one in performing'many forging operations. V

While in accordance with the provisions of the statutes I have illustrated and described the best forms of my apparatus now known to me, it will be apparentrto those skilled in the art that changes can be made in the forms of the apparatus disclosed without departing from the spirit of my invention hereinafter claimed.

Having now described my invention what I claim as new and desire to secure by Let- 1. An angleforging machine comprising I in combination a stationary internal forging die, and a movable coacting external die of complemental form formed in three sections, one adapted to coact directly with the angle of the internal die and the others to coact with the flange forming portions to coast with the flange forming portions of said die, means for guiding said die sections along parallel lines, independent means for moving said sections toward and away from the stationary die, and means for detachably securing said die sections together in assembled form so that they will move together.

3. A forging machine comprising in com bination a supporting frame-work, an abutment adjustably mounted thereon, a stationary die supported by said abutment, a movable die, means mounted in said supporting frame-work for moving said movable die horizontally toward and away from said stationary die, a second movable die, and means mounted in said frame-work above the stationary die for moving said second movable die vertically into and out of engagement with work engaged by the first mentioned dies.

4. An angle forging machinecomprising in combination relatively movable internal and external forging dies and work-holders pivotally connected to said external die and each comprising a portion extending transversely to the line of relative movement of said dies and spaced away from and adapted to swing about an axis parallel to the die faces.

Coplee o! this patent my be obtained tor-five cents each, by addressing the 5. In a forging machine the combination of relatively movable internal and external die members, said external die member being formed with a notch or depression in its side adjacent the stationary die, the ends of the wall of which extend laterally beyond the sides of said external die, and a pair of work-holders pivotally connected to said external die adjacent the ends of the wallof said notch, and comprising portions extend- 0 ing transversely to the line of relative movements of said dies and spaced away from and adapted to swing about the ends of said wall. I

6. In an angle forging machine the combination with a wedge shaped internal die, of a cooperating external die movable toward and away from the first mentioned die, and provided with a wedge shaped recess in its side adjacent said internal die, V

which is of greater width than said internal die, and a pair of work-holders pivotally connected to said external die, one adjacent each outer end of the wall of said notch and comprising ';a portion extending parallel to the wall of said notch and adapted to swing around the corresponding end of the wall of said notch. '1

MARTIN K. HENCH. v

Commissioner or intents,-

wumma, D. O. 

